It has been estimated that as much as two-thirds of deceased soldiers in the US Civile War were killed not by bullets but by disease, with the most prevalent of those diseases being the intestinal illnesses diarrhea and dysentery. It was not clear, based on the established medical knowledge, exactly what caused these illnesses to flourish in military camps, but one physician by the name of James H. Salisbury suspected diet was the greatest culprit, and came up with his own solution.
More Essex class aircraft carriers were built than any other capital ship in the 20th century, and the class would be witness to events that would come to define the modern world, and the age of the aircraft carrier.
The Reconquista, or Christian reconquest of Iberia, took nearly 800 years. The fighting did not come without great attempts by Muslim powers across the strait trying to reestablish their presence in mainland Europe. The last gasp of that effort came in the 1330s, when the powerful Marinid sultanate of what is modern Morocco invaded in an attempt to reverse Christian gains and secure the perilous position of the Sultanate of Granada.